Final answer:
The transponder must be tested and inspected to ensure compliance with regulations and safety standards. The frequency of testing varies depending on the industry and purpose of the transponder.
Step-by-step explanation:
The transponder must be tested and inspected to ensure compliance with relevant regulations and safety standards. The specific frequency for testing and inspection may vary depending on the industry and the transponder's purpose. For example, in the aviation industry, transponders are typically tested annually during the aircraft's scheduled maintenance checks. In contrast, in the transportation industry, transponders used for toll collection may be tested more frequently to ensure accurate readings and billing.